Efficient high gain with low sidelobe level antenna structures using circular array of square parasitic patches on a superstrate layer

Gupta, Rajiv; Mukherjee, Jayanta

doi:10.1002/mop.25613

Cited by 12 publications

(8 citation statements)

References 30 publications

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“…The array area of square parasitic patch superstrate is 1.75λ 0 × 1.75λ 0 with the peak gain of 16.5 dBi at 5.8 GHz in comparison with 2λ 0 ×2λ 0 and 15.8 dBi in Gupta's work [22]. The improvement of the current work is mainly due to the enhancement of directivity and a narrow beamwidth of the via hole feed patch.…”

Section: B Compact Non-periodic Microstrip Superstratementioning

confidence: 70%

“…Because the fields that propagate from the feed patch to each metal element have different path lengths and phases, the non-periodic microstrip superstrate is applied to control the phase of the metal elements to get in-phase between them. Therefore, the RCA with non-periodic microstrip superstrate is more efficient than the periodic structure [19]- [22]. In the same lateral dimension, the non-periodic parasitic patch superstrate is more suitable than the others because it requires a much less number of elements.…”

Section: Introductionmentioning

confidence: 99%

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Compact High Gain Resonant Cavity Antenna With via Hole Feed Patch and Hybrid Parasitic Ring Superstrate

Dang

Seo

2019

IEEE Access

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A compact and high gain resonant cavity antenna (RCA) is investigated in this work. At first, a ray-tracing model and the full-wave analysis are presented to clarify the characteristics of RCA in cases of finite lateral size and inhomogeneous superstrate. In consequence, a novel compact, high gain, and wideband RCA is proposed. The RCA consists of a via hole feed patch and an array of hybrid parasitic rings fabricated on a superstrate. The via holes feed patch with a high radiation directivity significantly enhances the RCA's gain. On another hand, the dimension and bandwidth of the RCA are improved by the hybrid parasitic ring superstrate which is constituted by non-periodic parasitic patch and rings. Finally, a prototype of the RCA is fabricated and measured. With only the dimension of 1.35λ 0 × 1.35λ 0 × 0.63λ 0 , the peak gain of 15.8 dBi and 3 dB gain bandwidth of 10.7% are obtained. INDEX TERMS Resonant cavity antenna, compact, high gain, non-periodic microstrip superstrate, hybrid parasitic ring.

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Section: B Compact Non-periodic Microstrip Superstratementioning

confidence: 70%

Section: Introductionmentioning

confidence: 99%

Compact High Gain Resonant Cavity Antenna With via Hole Feed Patch and Hybrid Parasitic Ring Superstrate

Dang

Seo

2019

IEEE Access

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“…In the presented approach, the cavity is composed of the FSS superstrate cover, feed antenna and extended waveguide broad wall as the ground plane. As in the cavity model, only a small portion of energy leaks out of the cavity through the opening in the lateral direction, and according to the electric filed polarization within the cavity, the openings in the lateral directions can be replaced by four magnetic walls . The cavity is surrounded by one metal wall at bottom, one parasitic patch's cover on top and by four magnetic walls in lateral directions.…”

Section: Antenna Configuration and Designmentioning

confidence: 99%

“…As in the cavity model, only a small portion of energy leaks out of the cavity through the opening in the lateral direction, and according to the electric filed polarization within the cavity, the openings in the lateral directions can be replaced by four magnetic walls. 9 The cavity is surrounded by one metal wall at bottom, one parasitic patch's cover on top and by four magnetic walls in lateral directions. According to the Fabry-Perot theorem, the resonant frequency of an ideal cavity can be calculated as follows 11,12 :…”

Section: Evaluation Of Resonant Frequencies Based On Cavity Modelmentioning

confidence: 99%

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High-gain waveguide slot antenna using simple parasitic patch's cover

Fakhte

Ghorbaninejad

2017

Int J RF Microw Comput Aided Eng

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In this article, a way based on using miniature patch cells has been proposed to increase gain and bandwidth of the waveguide slot antenna. In the presented approach, an array of 3 × 3 metal patches has been used as superstrate to create Fabry Perot theorem resonance cavity. The proposed high‐gain and simple antenna is composed of a conventional waveguide slot antenna with an extended broad wall, and an array of parasitic patches which are symmetrically placed over slot at a distance of about free‐space half wavelength. The slot has been created on a rectangular waveguide WR90 with 22.86 mm × 10.16 mm × 52.5 mm dimension, also extended wall dimension is 2λ0 (67.5 mm) × 3λ0 (107 mm). It has been shown that the proposed structure compared with the conventional waveguide slot antenna improves antenna peak gain from 6.5 to 16.5 dBi and, in the same time, antenna bandwidth from 11% to around 16.2%. More important advantage of the proposed antenna is that unlike to other Fabry Perot antenna with the same gain, there is not any dielectric material in the proposed structure. A prototype antenna was simulated, fabricated, and measured for verification.

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